公开(公告)号：US20190341609A1

公开(公告)日：2019-11-07

申请号：US16317348

申请日：2017-07-05

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke ENDO ,  Hiromasa MURAMATSU

IPC: H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C01G53/00

Abstract: To provide a hydroxide precursor having a high density, a method for producing a lithium transition metal composite oxide using the precursor, a positive active material having a large discharge capacity per unit volume, which uses the composite oxide, an electrode for nonaqueous electrolyte secondary battery, and a nonaqueous electrolyte secondary battery. A method for producing a transition metal hydroxide precursor for use in production of a lithium transition metal composite oxide, including adding a solution containing a transition metal (Me) into a reaction tank in which a water solvent of dissolution of a complexing agent and a reducing agent has been charged in advance to coprecipitate a transition metal hydroxide that includes Mn and Ni, or Mn, Ni and Co, and has a mole ratio Mn/Me of larger than 0.5 and a mole ratio Co/Me of 0.15 or less. Further, a lithium transition metal composite oxide having an α-NaFeO2-type crystal structure, in which a mole ratio Li/Me is larger than 1, the mole ratios of Mn and Co are as described above, and which has an X-ray diffraction pattern attributable to R3-m, a ratio (FWHM (003)/FWHM (114)) of a full width at half maximum of a diffraction peak of a (003) plane to a full width at half maximum of a diffraction peak of a (104) plane of 0.72 or less, and a peak differential pore volume of 0.50 mm3/(g·nm) or less as determined by a BJH method from an adsorption isotherm using a nitrogen gas adsorption method.

公开(公告)号：US20160240846A1

公开(公告)日：2016-08-18

申请号：US15026429

申请日：2014-10-01

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke ENDO ,  Hiromasa MURAMATSU

IPC: H01M4/485 ,  H01M10/0525 ,  H01M4/131 ,  C01G53/00

CPC classification number: H01M4/485 ,  C01G53/006 ,  C01G53/50 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/40 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive active material for a lithium secondary battery containing a lithium transition metal composite oxide having a hexagonal crystal structure in which the transition metal (Me) includes Ni, Co and Mn, wherein in the lithium transition metal composite oxide, a molar ratio of Ni to the transition metal (Me) (Ni/Me) is 0.5 or more and 0.9 or less, a molar ratio of Co to the transition metal (Me) (Co/Me) is 0.1 or more and 0.3 or less, a molar ratio of Mn to the transition metal (Me) (Mn/Me) is 0.03 or more and 0.3 or less, and a value obtained by dividing a half width ratio F(003)/F(104) at a potential of 4.3 V (vs. Li/Li+) by a half width ratio F(003)/F(104) at a potential of 2.0 V (vs. Li/Li+) is 0.9 or more and 1.1 or less.

Abstract translation: 一种含有具有六方晶系结构的锂过渡金属复合氧化物的锂二次电池用正极活性物质，其中过渡金属（Me）包括Ni，Co和Mn，其中在锂过渡金属复合氧化物中，Ni的摩尔比 过渡金属（Me）（Ni / Me）为0.5以上且0.9以下时，Co与过渡金属（Me）（Co / Me）的摩尔比为0.1以上且0.3以下，摩尔比 的Mn与过渡金属（Me）（Mn / Me）的摩尔比为0.03以上且0.3以下，通过将半值宽度比F（003）/ F（104）除以电位4.3V（vs Li / Li +）在2.0V（相对于Li / Li +）的电位下的半宽度比F（003）/ F（104）为0.9以上且1.1以下。

公开(公告)号：US20230036223A1

公开(公告)日：2023-02-02

申请号：US17788864

申请日：2020-12-16

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Shinya OTANI ,  Takenori TOYAMA ,  Daisuke ENDO

IPC: H01M4/525 ,  H01M4/505 ,  C01G53/00

Abstract: A nonaqueous electrolyte energy storage device according to one aspect of the present invention is a nonaqueous electrolyte energy storage device including a positive electrode having positive active material particles, in which the positive active material particles contain a lithium transition metal composite oxide having an α-NaFeO2 structure, the lithium transition metal composite oxide contains at least one of nickel and cobalt, and manganese, a content of lithium with respect to a transition metal in the lithium transition metal composite oxide exceeds 1.0 in terms of a molar ratio, a diffraction peak is present in a range of 20° or more and 22° or less in an X-ray diffraction diagram of the lithium transition metal composite oxide using a CuKα ray, and the positive active material particles contain aluminum.

公开(公告)号：US20160301073A1

公开(公告)日：2016-10-13

申请号：US15100479

申请日：2014-11-17

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Daisuke YOSHIKAWA ,  Daisuke ENDO

IPC: H01M4/525 ,  H01M4/131 ,  H01M10/0525 ,  H01M4/505 ,  C01G53/00

CPC classification number: H01M4/525 ,  C01G53/006 ,  C01G53/50 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/74 ,  C01P2004/32 ,  C01P2006/11 ,  C01P2006/14 ,  C01P2006/16 ,  H01B1/08 ,  H01M4/131 ,  H01M4/505 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028

Abstract: Provided is a positive active material for a lithium secondary battery containing a lithium transition metal composite oxide. The lithium transition metal composite oxide has an α-NaFeO2 structure. A transition metal (Me) includes Co, Ni and Mn and a molar ratio Li/Me of lithium (Li) to the transition metal is larger than 1.2 and smaller than 1.6. The lithium transition metal composite oxide has a pore volume of 0.055 to 0.08 cc/g in a pore region in which a pore size, at which a differential pore volume determined by a BJH method from an adsorption isotherm using a nitrogen gas adsorption method exhibits a maximum value, is within a range up to 60 nm, and exhibits a single phase belonging to a space group R3-m at 1000° C.

Abstract translation: 提供了含有锂过渡金属复合氧化物的锂二次电池的正极活性物质。 锂过渡金属复合氧化物具有α-NaFeO 2结构。 过渡金属（Me）包括Co，Ni和Mn，锂（Li）与过渡金属的Li / Me摩尔比大于1.2且小于1.6。 锂过渡金属复合氧化物在通过使用氮气吸附法的吸附等温线由BJH法测定的微孔容积的孔径在孔区域中的孔体积为0.055〜0.08cc / g， 最大值在高达60nm的范围内，并且在1000℃下表现出属于空间群R3-m的单相。

公开(公告)号：US20160285093A1

公开(公告)日：2016-09-29

申请号：US15172762

申请日：2016-06-03

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke ENDO ,  Hiromasa Muramatsu

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/505

CPC classification number: H01M4/131 ,  C01G53/006 ,  C01G53/50 ,  C01P2002/20 ,  C01P2002/76 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/40 ,  H01M4/48 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2220/20 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

Abstract: Provided is a positive active material for a lithium secondary battery includes a lithium transition metal composite oxide having an α-NaFeO2-type crystal structure and represented by the composition formula of Li1+αMe1−αO2 (Me is a transition metal including Co, Ni and Mn and α>0). The positive active material contains Na in an amount of 900 ppm or more and 16000 ppm or less, or K in an amount of 1200 ppm or more and 18000 ppm or less.

公开(公告)号：US20160190551A1

公开(公告)日：2016-06-30

申请号：US14903483

申请日：2014-06-18

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Daisuke ENDO

IPC: H01M4/36 ,  H01M4/505 ,  H01M10/052 ,  H01M4/525

CPC classification number: H01M4/364 ,  C01G53/50 ,  C01P2002/30 ,  C01P2002/74 ,  C01P2002/76 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/16 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M2004/028 ,  H01M2220/20 ,  Y02T10/7011

Abstract: Provided is a mixed active material for a lithium secondary battery, which includes a lithium transition metal composite oxide having an α-NaFeO2 structure with the transition metal (Me) including Co, Ni and Mn and the Mn/Me molar ratio being more than 0.5, and a lithium transition metal composite oxide having an α-NaFeO2 structure with the transition metal (Me) including Co, Ni and Mn and the Mn/Me molar ratio being more than 0 and not more than 0.5, wherein the mixed active material has a specific surface area of 4.4 m2/g or less and a S content of 0.2 to 1.2% by mass.

Abstract translation: 提供了一种锂二次电池用混合活性物质，其包括具有包含Co，Ni和Mn的过渡金属（Me）和Mn / Me摩尔比大于0.5的具有α-NaFeO 2结构的锂过渡金属复合氧化物 和具有包含Co，Ni和Mn的过渡金属（Me）和Mn / Me摩尔比大于0且不大于0.5的具有α-NaFeO 2结构的锂过渡金属复合氧化物，其中所述混合活性材料具有 比表面积为4.4m 2 / g以下，S含量为0.2〜1.2质量％。

公开(公告)号：US20240379942A1

公开(公告)日：2024-11-14

申请号：US18686166

申请日：2022-08-23

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke ENDO

IPC: H01M4/36 ,  C01G53/00 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525

Abstract: A positive electrode for a nonaqueous electrolyte energy storage device according to one aspect of the present invention includes a first positive active material and a second positive active material having different constituent element compositions from each other, the first positive active material is at least one of primary particles that are not substantially aggregated and secondary particles that are aggregated primary particles and have a ratio of an average particle size to an average primary particle size of 5 or less, an average particle size of the first positive active material is ½ or less of an average particle size of the second positive active material, and the second positive active material is a lithium transition metal composite oxide in which a content of a lithium element with respect to a transition metal element is more than 1.0 in terms of a molar ratio.

公开(公告)号：US20240170646A1

公开(公告)日：2024-05-23

申请号：US18284936

申请日：2022-03-14

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke ENDO

IPC: H01M4/36 ,  C01B25/45 ,  C01G53/00 ,  H01M4/02 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M50/209 ,  H01M50/51

CPC classification number: H01M4/364 ,  C01B25/45 ,  C01G53/50 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M50/209 ,  H01M50/51 ,  C01P2006/40 ,  H01M2004/028

Abstract: A positive active material for a nonaqueous electrolyte energy storage device according to one aspect of the present invention contains a lithium transition metal compound having a polyanion structure and represented by a general formula LiMPO4 (M is one or more elements selected from Fe, Mn, Ni, and Co) or Li3V2(PO4)3, and a lithium transition metal composite oxide having an α-NaFeO2 type crystal structure and represented by a general formula Li1+αMe1−αO2 (0

公开(公告)号：US20230163293A1

公开(公告)日：2023-05-25

申请号：US17917177

申请日：2021-03-23

Applicant: GS Yuasa International Ltd.

Inventor： Takenori TOYAMA ,  Shinya OTANI ,  Daisuke ENDO

IPC: H01M4/525 ,  H01M10/052 ,  H01M4/505

CPC classification number: H01M4/525 ,  H01M10/052 ,  H01M4/505 ,  H01M2004/028

Abstract: A positive active material for a nonaqueous electrolyte energy storage device according to one aspect of the present invention is a positive active material for a nonaqueous electrolyte energy storage device containing a lithium transition metal composite oxide having an α-NaFeO2 structure, the positive active material further containing aluminum, in which the lithium transition metal composite oxide contains at least one of nickel and cobalt, and manganese, a content of manganese in a transition metal. in the lithium transition metal composite oxide is 0.6 or less in terms of molar ratio, and in a charged state at a potential of 4.35 V vs. Li/Li+ in a state where there is no charge history in which the potential reaches 4.5 V vs. Li/Li+ or more, an oxygen positional parameter of the positive active material determined from crystal structure analysis by a Rietveld method when a space group R3-m is used. for a crystal structure model based on an X-ray diffraction pattern is 0.265 or more and 0.269 or less.

公开(公告)号：US20230130712A1

公开(公告)日：2023-04-27

申请号：US17909473

申请日：2021-03-03

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke ENDO ,  Naoki INOUE ,  Takanori MAHARA

IPC: H01M4/58 ,  H01M4/62 ,  H01M10/0525

Abstract: The positive active material for an energy storage device according to one aspect of the present invention has an olivine-type crystal structure, has a surface at least partially coated with carbon, and satisfies either (A) or (B) below. (A) a pore volume in a range of a pore size of 60 nm or more and 200 nm or less determined by a BJH method from a desorption isotherm using a nitrogen gas adsorption method is 0.05 cm3/g or more and 0.25 cm3/g or less, and a pore specific surface area in a range of a pore size of 10 nm or more and 200 nm or less using a nitrogen gas adsorption method is 5 m2/g or more; (B) a full width at half maximum ratio (200)/(131) of a peak corresponding to a (200) plane to a peak corresponding to a (131) plane by a powder X-ray diffraction method using a CuKα ray in a charged state is 1.10 or less.